package com.lun.easy;

import java.util.HashMap;
import java.util.Map;

public class TwoSum {
	public int[] twoSum(int[] nums, int target) {
		Map<Integer, Integer> map = new HashMap<>();

		for (int i = 0; i < nums.length; i++) {
			int diff = target - nums[i];
			if (map.containsKey(diff)) {
				return new int[] { map.get(diff), i };
			}
			map.put(nums[i], i);
		}
		return new int[] { -1, -1 };
	}
}
